Ecovyst, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Background and Basis of Presentation (Policies)
Notes Tables
Notes Details

Stock-Based Compensation - Schedule of RSU and PSU Activity (Details)

v3.23.1

Stock-Based Compensation - Schedule of RSU and PSU Activity (Details)	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Restricted Stock Units (RSUs)
Number of Units
Nonvested, beginning balance \| shares	2,464,718
Granted \| shares	1,104,690
Vested \| shares	(821,901)
Forfeited \| shares	(160,316)
Nonvested, ending balance \| shares	2,587,191
Weighted Average Grant Date Fair Value (per share)
Beginning balance nonvested (weighted average grant date fair value, usd per share) \| $ / shares	$ 11.73
Granted (weighted average grant date fair value, usd per share) \| $ / shares	9.85
Vested (weighted average grant date fair value, usd per share) \| $ / shares	13.04
Forfeited (weighted average grant date fair value, usd per share) \| $ / shares	10.96
Ending balance nonvested (weighted average grant date fair value, usd per share) \| $ / shares	$ 10.55
Performance Stock Units (PSUs)
Number of Units
Nonvested, beginning balance \| shares	639,532
Vested \| shares	(200,204)
Forfeited \| shares	(183,864)
Nonvested, ending balance \| shares	958,904
Weighted Average Grant Date Fair Value (per share)
Beginning balance nonvested (weighted average grant date fair value, usd per share) \| $ / shares	$ 16.32
Vested (weighted average grant date fair value, usd per share) \| $ / shares	20.48
Forfeited (weighted average grant date fair value, usd per share) \| $ / shares	19.50
Ending balance nonvested (weighted average grant date fair value, usd per share) \| $ / shares	$ 11.87
Performance Stock Units (PSUs) \| 2023 Grants
Number of Units
Granted \| shares	703,440
Weighted Average Grant Date Fair Value (per share)
Granted (weighted average grant date fair value, usd per share) \| $ / shares	$ 12.28

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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